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Finding the Fourth Proportional to 5,609.27, 7,740.96 and 3,219.68

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Solution

The fourth proportional to 5,609.27, 7,740.96 and 3,219.68 is: 4,443.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,609.27 : 7,740.96 = 3,219.68 : x
  2. Step 2: Convert to fraction form
    5,609.27/7,740.96 = 3,219.68/x
  3. Step 3: Cross multiply
    5,609.27x = 7,740.96 × 3,219.68
  4. Step 4: Simplify right side
    5,609.27x = 24,923,375.39
  5. Step 5: Solve for x
    x = 24,923,375.39/5,609.27
  6. Step 6: Final answer
    x = 4,443.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.